Articles | Volume 23, issue 3
https://doi.org/10.5194/hess-23-1705-2019
https://doi.org/10.5194/hess-23-1705-2019
Research article
 | 
26 Mar 2019
Research article |  | 26 Mar 2019

Unraveling the hydrological budget of isolated and seasonally contrasted subtropical lakes

Chloé Poulin, Bruno Hamelin, Christine Vallet-Coulomb, Guinbe Amngar, Bichara Loukman, Jean-François Cretaux, Jean-Claude Doumnang, Abdallah Mahamat Nour, Guillemette Menot, Florence Sylvestre, and Pierre Deschamps

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Cited articles

Abderamane, H., Razack, M., and Vassolo, S.: Hydrogeochemical and isotopic characterization of the groundwater in the Chari-Baguirmi depression, Republic of Chad, Environ. Earth Sci., 69, 2337–2350, https://doi.org/10.1007/s12665-012-2063-7, 2013. a
Ali, A. and Lebel, T.: The Sahelian standardized rainfall index revisited, Int. J. Climatol., 29, 1705–1714, https://doi.org/10.1002/joc.1832, 2009. a
Bader, J.-C., Lemoalle, J., and Leblanc, M.: Modèle hydrologique du Lac Tchad, Hydrolog. Sci. J., 56, 411–425, https://doi.org/10.1080/02626667.2011.560853, 2011. a
Biasutti, M., Voigt, A., Boos, W. R., Braconnot, P., Hargreaves, J. C., Harrison, S. P., Kang, S. M., Mapes, B. E., Scheff, J., Schumacher, C., Sobel, A. H., and Xie, S.-P.: Global energetics and local physics as drivers of past, present and future monsoons, Nat. Geosci., 11, 392–400, https://doi.org/10.1038/s41561-018-0137-1, 2018. a
Billon, B., Guiscafre, J., Herbaud, J., and Oberlin, G.: Le bassin du fleuve Chari, Monographies hydrologiques, ORSTOM, 1974. a
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Short summary
This study investigates the water budget of two intertropical lake systems in the absence of long-term hydrological monitoring. By coupling dry season isotopic data with satellite imagery, we were able to provide quantitative constrains on the hydrological balance and show that these two lake systems can be considered miniature analogs of Lake Chad, making them important targets in the future setup of any large-scale program on the hydro-climatic evolution in the Sahel region.